Comparison of MHP long tube and Renntech shorty M156 headers show poor weld and product quality from Renntech

Comparison of MHP long tube and Renntech shorty M156 headers show poor weld and product quality from Renntech

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Comparison of MHP long tube and Renntech shorty M156 headers show poor weld and product quality from Renntech

Pictures of these Renntech headers (it was confirmed these are in fact from Renntech Florida) were posted up by a BenzBoost user. We all know MHP makes a high quality product and that is seen here with what is clearly the MHP long tube setup. What is stated as the Renntech header appears to be a modified stock setup and clearly is not a long tube or race setup as we were told the customer asked for. An additional claim is that these are $8000 dollar headers from Renntech but in an article posted last week we showed the Renntech long tube headers which are ceramic coated for that price and they look nothing like these.

We suggest you come to your own conclusion but there is no denying the terrible welds and simply poor quality of the shorty headers seen here vs. MHP. What one can definitively take away is the MHP long tube option is a solid one. We will wait on comments from Renntech and continue to state that Renntech is a high quality option. We also believe Renntech offers a warranty on exhaust pieces so if the owner was upset and this was a Renntech piece this issue would have been taken care of by quality customer service.

* It was confirmed that these are in fact headers from Renntech Florida.

I believe the law states you cannot remove a functioning factory cat for 60,000 miles or something unless damaged first? This goes for any state. I could be wrong but that's what I remember.

So all aftermarket catalytic converter cars are by definition illegal. another joke.

Dude the shorty headers bolt on to the OE system. Translation just so even jbond can understand: the OE cats are not removed and not even moved to another spot and therefore legal. I could make you even a drawing but don't have the time.

Customer has receipt, is 74 year old texas rancher with oil pipelines running through his 50,000 acres. He shipped his car to RENNTECH for all work. Everything posted by me is a fact.

You do not know what the customer paid for these "custom" headers so please don't talk about things you don't know to true or not. Cost and Product are clearly stated on the receipt of over $30,000 in total modifications. You didn't pay the bill and haven't seen the invoice nor know the situation (the months of the customer trying to get RENNTECH to do something about their product), however you are sporting a RENNTECH built car aren't you?

You know because you paid $8k for custom LTs, how did they turn out? Have any pics to post?

You don't know a thing about this customer or this situation so please stop trying to be RENNTECH's liaison and just look at the facts presented. Customer wanted maximum performance from RENNTECH and had an open wallet so why on earth would they give him revised manifolds vs actual longtubes? There is no legitimate answer. Same goes for not repairing them.

I'm going to PM you the customer's number so you can see how far off your assumptions are.

So how does this effect the 63s? Being that the 55Ks have a blower and create a ton more underhood heat how is this even relevant? It's not. Being that you have Longtubes are you worried about your motor mounts?

I thought the same until I met the customer.

You've already speculated and did your best to spin the situation around for RENNTECH however once you call the customer you're going to have an entirely different perspective. Just remember to post what he says after you speak with him.

Also this last statement is actually the furthest thing from the truth possible. They did the exact opposite of what you're saying telling him they were custom one off and stainless cracks when it's welded. Pretty pathetic IMO.

A 74 year old Texas Rancher with oil pipelines running thru his Ranch? ARE YOU KIDDING ME???

No, not all aftermarket cat cars are by definition illegal because as you correctly pointed out, when OEM cats fail you can replace them with aftermarket cats. The pool of CARB legal aftermarket cats is very small. And I actually doubt, any LT vendor for the M156 market uses the CARB approved aftermarket cats.

I don't know for sure, so can you please provide the actual name of the cats that LT vendors can recommend for CARB legal application.

That might very well be the case.
However in this case it just doesn't sound right. Also, i just can't picture that rich farmer dude in a C63, sorry.

You can't picture it, because you are clearly misinformed. A farm is not a ranch. Ranches are used for hunting, relaxing, possibly raising cattle. Most Texans with ranches have them as second homes. That being said, one of my buddies is a farmer down here and he just got rid of his G55 AMG. 3 of the guys I work with all own both Benz's and ranches as well.

You can picture all Texans with American pickup trucks and wranglers if you'd like, but that's ignorant and inaccurate.

Graham Rahal was selling the $8k Renntech headers that came on his Black Series when he bought it - they look very similar to the ones here...there is a pic of them on MBW but I cannot access it...here is the page:

Customer has receipt, is 74 year old texas rancher with oil pipelines running through his 50,000 acres. He shipped his car to RENNTECH for all work. Everything posted by me is a fact.

You do not know what the customer paid for these "custom" headers so please don't talk about things you don't know to true or not.

Maybe you did NOT read my post correctly..... I stated that we don't know all the details (and all the sides) to this story yet. So let me present my suggestion again: RENNtech sells those headers for about $3k.... everybody knows that price. It's on their website, on their mailer, and pretty much everywhere else they advertise. Now consider this: if the customer requested "custom" long-tube headers (meaning not the standard one they sell for $3k) then he would've received (at least) different looking headers (regardless of material/build quality). The fact that he received those headers tells me that either the "extra" $5k were charged for something else or maybe they did double bill him for the same headers in which case, we'll try to get RENNtech to make it right for him.

Originally Posted by JBond

Cost and Product are clearly stated on the receipt of over $30,000 in total modifications. You didn't pay the bill and haven't seen the invoice nor know the situation (the months of the customer trying to get RENNTECH to do something about their product), however you are sporting a RENNTECH built car aren't you?

LOL.... okay, I'll play your game.... you don't know the exact situation either.... you don't know what RENNtech told him or what their side of the story is or how the situation was handled. You only know what the customer told you, which is fine, but all I was suggesting was to find out the truth and try to help him. How did you know I sport a RENNtech car? ...... aren't you a RENNtech competitor, I don't think you should be talking either

Originally Posted by JBond

You know because you paid $8k for custom LTs, how did they turn out? Have any pics to post?

Incorrect again.... I can see how you get your facts now

Originally Posted by JBond

You don't know a thing about this customer or this situation so please stop trying to be RENNTECH's liaison and just look at the facts presented. Customer wanted maximum performance from RENNTECH and had an open wallet so why on earth would they give him revised manifolds vs actual longtubes? There is no legitimate answer. Same goes for not repairing them.

RENNtech doesn't (and never have) focused on "maximum performance".... their products are less aggressive but pro reliability, durability, etc.... I think you know that more than most. Also, if they've fixed headers and have taken care of customers for a very long time, why wouldn't they do it for this one? All I'm suggesting is we find out what happened so we can actually help him, so stop being a "liaison" for MHP (sorry, I had to... ).

Originally Posted by JBond

You've already speculated and did your best to spin the situation around for RENNTECH however once you call the customer you're going to have an entirely different perspective. Just remember to post what he says after you speak with him.

On the contrary, you've implicitly spun this situation maximum force towards MHP...... and I will indeed speak to the customer and try to help him out

You can't picture it, because you are clearly misinformed. A farm is not a ranch. Ranches are used for hunting, relaxing, possibly raising cattle. Most Texans with ranches have them as second homes. That being said, one of my buddies is a farmer down here and he just got rid of his G55 AMG. 3 of the guys I work with all own both Benz's and ranches as well.

You can picture all Texans with American pickup trucks and wranglers if you'd like, but that's ignorant and inaccurate.

Relax, I am sure there are many Ranchers / Farmers in Texas and other states that are very wealthy and sure like their toys including Mercedes (especially a G55) and other nice things this world has to offer. Absolutely no disrespect here, quite the opposite.
What i tried to bring across here is that in this particular case it sounds very much made up and probably is. (is that better?)

Dude the shorty headers bolt on to the OE system. Translation just so even jbond can understand: the OE cats are not removed and not even moved to another spot and therefore legal. I could make you even a drawing but don't have the time.

Dude, there were no cats used in this system and this is not even an issue. Piss off.

Relax, I am sure there are many Ranchers / Farmers in Texas and other states that are very wealthy and sure like their toys including Mercedes (especially a G55) and other nice things this world has to offer. Absolutely no disrespect here, quite the opposite.
What i tried to bring across here is that in this particular case it sounds very much made up and probably is. (is that better?)

Exenom, get off your ass and make some calls to validate what's posted. We can then tell amg4v to post his bs somewhere else.

Exenom, get off your ass and make some calls to validate what's posted. We can then tell amg4v to post his bs somewhere else.

I'm on it.... I just sent an e-mail to the customer

AMG4V..... please don't pre-judge the customer. Lets wait and find out the truth and hear both sides of the story before we make any accusations. Maybe the customer is telling the truth and he did get screwed by RENNtech? Maybe not? Who knows....

I will talk to the customer personally and will post the truth (un-biased) for you guys to decide. I will also try to help him resolve this.

Maybe you did NOT read my post correctly..... I stated that we don't know all the details (and all the sides) to this story yet. So let me present my suggestion again: RENNtech sells those headers for about $3k.... everybody knows that price. It's on their website, on their mailer, and pretty much everywhere else they advertise. Now consider this: if the customer requested "custom" long-tube headers (meaning not the standard one they sell for $3k) then he would've received (at least) different looking headers (regardless of material/build quality). The fact that he received those headers tells me that either the "extra" $5k were charged for something else or maybe they did double bill him for the same headers in which case, we'll try to get RENNtech to make it right for him.

No, you read what you wanted to read out of mine. You don't know either side, I know one. The side I've heard matches up with what I've been shown. I don't really care what's on the site or mailer, I know what the customer asked for, was promised, and what he paid for it. You can ask RENNTECH why when he asked for performance longtubes to make the car as fast as possible they stuck him with those logs. I'll tell you right now you will have zero progress on the RENNTECH front. Customer exhausted all possibility by asking RENNTECH to help him over and over again and they refused every time.

LOL.... okay, I'll play your game.... you don't know the exact situation either.... you don't know what RENNtech told him or what their side of the story is or how the situation was handled. You only know what the customer told you, which is fine, but all I was suggesting was to find out the truth and try to help him. How did you know I sport a RENNtech car? ...... aren't you a RENNtech competitor, I don't think you should be talking either

No, I'm not a RENNTECH competitor, and why shouldn't I be talking? We are here to share legit info right? Or is this going to be another MBW now?

I know what the customer told me RENNTECH told him and once you talk to him you tell me he's a liar.

Everyone knows you sent your car to RENNTECH, BUT no results have been posted performance wise. Why? Where are the dynos, timeslips, pictures of your mods?

Incorrect again.... I can see how you get your facts now

Post your receipt. I gave you the info to back my claims, now man up and do the same.

RENNtech doesn't (and never have) focused on "maximum performance".... their products are less aggressive but pro reliability, durability, etc.... I think you know that more than most. Also, if they've fixed headers and have taken care of customers for a very long time, why wouldn't they do it for this one? All I'm suggesting is we find out what happened so we can actually help him, so stop being a "liaison" for MHP (sorry, I had to... ).

You are like RENNTECHs mouthpiece on the forums, anytime there is an issue you post in their defense without knowing either side of the story. In this instance instead of posting a presumptuous rant why not PM me for further info so you can investigate further? That's what you should have done instead of mindlessly guessing as to why this customer has been shut out customer service wise.

Liaison for MHP? That's funny. I post a pic comparing a legitimately designed and priced header, then one that's the opposite, clearly not photoshopped (computer nerds eat your heart out) and tell the same story you will hear from the customer and shop whose info I sent you already. You immediately jump to RENNTECHs defense (per usual) about other people but have nothing to say about this case, the only one relevant right now.

On the contrary, you've implicitly spun this situation maximum force towards MHP...... and I will indeed speak to the customer and try to help him out

$#@! MHP, $#@! RENNTECH, $#@! Eurocharged, $#@! Powerchip, $#@! Kleemann. I don't have to spin $#@!. Look at the fukin pics and talk to the customer, then come back and apologize for being 100% wrong about everything you just posted. I'll be waiting.

AMG4V..... please don't pre-judge the customer. Lets wait and find out the truth and hear both sides of the story before we make any accusations. Maybe the customer is telling the truth and he did get screwed by RENNtech? Maybe not? Who knows....

I will talk to the customer personally and will post the truth (un-biased) for you guys to decide. I will also try to help him resolve this.

Please do and you will realize my posts are not biased at all. You can apologize for that then as well.